thanks eddie - will have a peruse later on - you know about 10 years ago I did buy a bloody walkman - used twice - cannae find the bloody thing - yet it never moved from the back bedroom. I have done manys a spring cleaning but never came across it.
Buy a radio cassette and refuse to acknowledge the radio bit.
It is possible there is not the market demand for cassette only products to be viable to build. Might get a second hand one on an auction site though.